DE29722787U1 - Roller skate with lockable brake - Google Patents

Description

Description ROLLER SKATE WITH LOCKABLE BRAKE

Technical area

The invention relates to a roller skate, in particular an in-line skate, with a lockable braking device according to claim 1.
10

State of the art

In recent years, roller skates in the form of in-line skates have become increasingly popular. While conventional roller skates were mainly just a toy for children, in-line skates are now used by people of all ages as a modern, environmentally friendly means of transport or as a piece of sports equipment. In order for in-line skates to be considered safe in traffic, it is important that they can be used to accelerate and brake quickly in order to avoid impending obstacles or to stop in front of them.

The document US-A-5 403 021 shows a roller skate with a braking device, which has a recess in a sole through which pressure can be exerted on a brake lever with the front toes. This brake lever is pivotally fixed at the rear end of the shoe. Conical braking elements are attached to this brake lever, which are brought into contact with the rollers when pressure is exerted on the brake lever. Due to the conical shape of the braking elements, braking begins with the rear rollers and is only activated when greater braking pressure is applied to the

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front rollers. The major disadvantage of the braking device disclosed here is that, especially during acceleration, which is achieved by repeatedly taking powerful skating steps, unintentional braking by pressing one of the toes on the brake pedal can hardly be prevented. This leads to falls and thus injuries to the driver.

The generic roller skate disclosed in document WO 97/15360, which has a recess in a sole, also has a braking device, via which pressure can be exerted on a brake lever using the front toes. During braking, a rear brake body is first brought into operative connection with at least one of the rear rollers via the brake lever, whereby only when the braking pressure is increased can a front brake body be pressed in a controlled manner onto at least one of the front rollers to ensure maneuverability. This roller skate also has a fixing device in the form of a blocking screw, by means of which the height of the maximum pivoting range of the pedal can be reduced or set to zero. The blocking screw is firmly connected to the roller skate in the area of the toes and can be operated via a rotating body in such a way that the braking device is adjusted, deactivated or blocked. A disadvantage of this locking device is that it can only be activated when the vehicle is stationary without the risk of tipping over at the front. Furthermore, it cannot be adapted to the desired driving situation, namely acceleration or braking, within a reasonable time, so that safe use is not possible, especially in traffic.

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Description of the invention

It is the object of the invention to further develop the generic roller skate and to create a braking device for a roller skate that can be activated or deactivated according to the respective driving situation, whereby in the activated state sufficient braking force should be made available to be able to bring the driver to a stop with an acceptable braking distance.

This object is achieved by a roller skate having the features listed in patent claim 1.

In the roller skate according to the invention, the brake release device that triggers the braking device can be locked by a locking device that can be switched on and off while driving. This has the advantage that the braking device is not activated accidentally, but only when a braking maneuver is desired. This means that the roller skate can be used not only in open terrain, but also in road traffic.

If the locking device is arranged in such a way that it can be operated with the toes, it is also possible for inexperienced drivers who need other parts of their body, such as arms and hands, to maintain balance, to operate the locking device safely.

Furthermore, the locking device can have a shoe-side locking section and a pedal-side

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Have a locking section, whereby the pedal-side locking section can be brought into engagement with the shoe-side locking section for locking and can be released again to release the brake pedal. This arrangement enables both the braking device and the locking device to be operated with the toes, which makes it easier to learn to brake, since coordination skills only need to be developed in the area of the toes. Furthermore, the technical outlay on the shoe itself is kept to a minimum by bringing the braking and locking devices together.

The locking device or the locking part arranged on the shoe-side locking section can be preloaded by elastic sections 86, e.g. spring devices, rubber devices and/or the like, in the direction of a position in which the braking device is locked. This prevents the braking device from being triggered unintentionally, especially during acceleration.

A moving part that can be moved with the toes and is operatively connected to the locking part can be 5 moved parallel to the roller skate's longitudinal axis or pivoted about a moving part axis in order to bring the locking part into a locked position or to release it from this.

The locking part can be a locking lever that can be pivoted about a locking lever axis, one arm of which is operatively connected to the moving part and the other arm of which can be brought into engagement with the shoe-side locking section. However, it can also be designed as a locking projection.

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· &igr;

which is firmly connected to the moving part, whereby the locking projection can be brought into engagement with the shoe-side locking section by moving the moving part. This variant in particular reduces the outlay on the device and the susceptibility to failure due to the elimination of a moving part.

Advantageously, the shoe-side section is formed by a rail located in the shoe compartment or directly underneath it in order to also take the aesthetic aspect into account.

In order to prevent the toes from slipping on the moving part and thus to enable the locking device to be operated safely, it is advantageous to arrange an adhesive device in the form of at least one elevation or an adhesive layer on the moving part where the toes rest.
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If the locking device is additionally provided with a blocking device by which the moving part is brought into either a permanently locked position or a permanently unlocked position, the braking device can be switched off completely, for example during cross-country journeys where braking is hardly necessary.

Especially for people who have difficulty coordinating their toes, it is advantageous to release the locking device using a device away from the shoe in order to prevent the braking device from being activated accidentally.

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In the braking device according to the invention, the brake pedal preferably acts on an actuating device which has a first actuating lever, the load arm of which links the force arm of a second actuating lever. The load arm of the second actuating lever brings a brake body into operative connection with at least one rear roller of the roller skate. By the interaction of the first actuating lever with the second actuating lever, wherein both actuating levers are mounted in a central region via a rotation axis, it is possible on the one hand to apply the required actuating paths in order to carry out controlled braking, and on the other hand to provide the required braking force in order to brake. Since the brake body acts on the rear rollers, the front rollers do not block and are still available to the driver for steering. In addition, the braking force which is applied far back can help to keep the center of gravity in a controllable area during the braking process.

As already indicated above, the brake body or the actuating device can be preloaded individually or jointly by elastic sections or spring devices, e.g. rubber bands or the like, in the direction of a rest position in which no braking function is performed.

If an elastic device, such as a spring, is provided between the force arm of the first actuating lever and the brake body, a force can be exerted in a metered manner on at least one of the front rollers.

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Further details, features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.
5

It shows:

Figure 1 is an exploded view of a pedal-side locking section according to a first preferred embodiment of the present invention;

Figures 2a to 2c show the brake release process after releasing the locking device according to the first preferred embodiment of the present invention;

Figure 3 is an exploded view of a pedal-side locking section according to a second preferred embodiment of the present invention; 20

Figures 4a to 4c show the brake release process after releasing the locking device according to the second preferred embodiment of the present invention;

Figure 5 is an exploded view of a pedal-side locking section according to a third preferred embodiment of the present invention;

Figures 6a to 6c show the brake release process after releasing the locking device according to the third preferred embodiment of the present invention;

Figure 7 is a schematic representation of the roller skate with lockable brake according to the first preferred embodiment of the present invention;

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Figure 8 is a schematic representation of the two operating levers and the brake body of the braking device of the present invention;
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Figure 9 shows a detail of the embodiment according to Figure 7, a section through a roller with associated brake body perpendicular to the running direction.

The reference symbols shown in the figures correspond to the same or at least functionally identical devices and are shown again at the end in the reference symbol list.

The roller skate 1 or in-line skate 1 shown schematically in Fig. 7 has a braking device with a locking device according to a first preferred embodiment. The in-line skate 1 has a shoe body 2, a roller holder 4 firmly connected to the shoe body 2, four rollers 6, 1, 8 and 9 arranged in a row one behind the other and a braking device 10. The four rollers are rotatably attached to the roller holder 4 by means of four rotation axes 12 arranged parallel to one another and one behind the other.

The roller skater exerts a force on a brake pedal 16 of the braking device 10 via the big toe 14 of his foot or via several or all of the toes of the foot, with the rest of the roller skater's foot being supported on a shoe sole 3 of the shoe body 2.

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The braking device 10 of the roller skate 1 has a first actuating lever 20 with a force arm 20a and a load arm 20b, which is pivotably mounted on a pivot axis 22. The pivot axis 22 is attached to the roller holder 4. The brake pedal 16 acts on the force arm 20a of the first actuating lever 20 and presses the force arm 20a downwards and the load arm 20b upwards.

The load arm 20b of the first actuating lever 20 is in engagement with a second actuating lever 24, which, like the first actuating lever 20, is part of an actuating device and presses a brake body 26 first onto the two rear rollers 6 and 7 when braking. When the brake pressure is increased or the pedal 16 is pressed further down, the brake body is then pressed in a metered manner onto at least one of the front rollers 8 or 9.

The preferred form of the first brake body 26, which virtually surrounds the respective rollers, is shown in Fig. 8. The arrangement of the first brake body in relation to the rollers is shown in Fig. 9.

5 The second actuating lever 24 is pivotally mounted on a second pivot axis 28, which is firmly connected to the roller holder 4. The load arm 20b of the first actuating lever 20 is movably connected to the force arm 24b of the second actuating lever 24. The load arm 24b of the second actuating lever 24 is connected to the brake body 26 via a swivel joint 34. As soon as a force is exerted on the brake device 10 via the brake pedal 16, the brake body 26 is pivoted in the direction of

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the rollers 6 and 7, thereby achieving a braking effect.

A spring device, in particular in the form of a compression spring 92, can be arranged at a suitable location in order to be able to move the actuating lever arrangement 20, 24 back into a predeterminable rest position. In particular, it is expedient to provide this compression spring 92 between the force arm 20a of the first actuating lever 20 and the brake body. This is for the following reason. The load arm 24b of the second actuating lever 24 is connected to the brake body 26 via the swivel joint 34, whereby when the braking device 10 is actuated, a force is exerted mainly on the rear rollers 6 and 7, but less on the front rollers 8 and 9. In extreme braking situations in which braking by the front rollers 8 and 9 is also required, a force is exerted on the front part of the brake body 26 via the spring 92 when the brake pedal 16 0 is pressed further down. Since the spring is elastic, the force is not applied abruptly, but in a controlled manner to ensure maneuverability during braking.

In addition, since the braking device 10 implemented here mainly only brakes the two rear rollers 6 and 7, over-braking of the in-line skates is not possible. When braking hard, the braking effect causes a weight shift to the front rollers 8 and 9, which leads to a reduction in the braking effect by lifting the rear rollers 6 or 6 and 7 off the road. This prevents rollovers caused by excessive braking.

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Instead of the second actuating lever 24, a cable pulling device (not shown in detail) can also be provided, whereby a cable can then be attached to the load arm 20b of the first actuating lever 20, which acts via a deflection point on the first brake body 26 arranged above or below the axles 12 in order to brace it against the axles 12 of at least the rear rollers 6 and 7 or the outer circumferences of the rollers 6 and 7. This can also provide adequate braking power.

Furthermore, the brake body is preloaded by elastic sections or spring devices (not shown), such as rubber bands or the like, in the direction of a rest position in which no braking function is performed. This effect can also be achieved by the repulsion of polarized permanent magnets. For example, by two permanent magnets polarized for repulsion, which are arranged opposite one another on the load arm 20a of the first actuating lever 20 and the opposite underside of the shoe sole 3.

The design of the braking device 10 described up to this point is the same in all three preferred embodiments. Only the design of the locking devices 60 changes.

In Figures 2a to 2c, the release of the locking device 60 to release the brake pedal 16 according to the first preferred embodiment of the present

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The invention and the subsequent brake release process are shown.

The locking device 60 consists of a pedal-side section 80, which is shown in detail in an exploded view in Figure 1, and a shoe-side section 70. The pedal-side section 80 has a fastening part 88 which is firmly connected to the first actuating lever 20. A movement part 82 is attached to this fastening part 88 in such a way that it can be moved parallel to the roller skate's longitudinal axis L. In addition, a locking part 84 in the form of a locking lever 84 which can be pivoted about a lever axis H is attached to the fastening part 88 and is preloaded by a spring 86 arranged between the fastening part 88 and the locking lever 84 in such a way that it is pivoted in a vertical direction (see Figure 2a). Due to this inclined position, the locking lever 84 is in engagement or in contact with the shoe-side locking section 70, which is formed by a rail 70, and thus prevents the brake pedal 16 or the pedal-side locking section 80 from being pressed downwards.

If, as shown in Figure 2b, the moving part 82 is moved backwards parallel to the roller skate’s longitudinal axis L, the locking lever 84 is brought into a vertical position by a projection formed on the moving part 82 and is now no longer in engagement with the rail 70. By pressing the big toe 14 from above onto the moving part 82, as shown in Figure 2c, the entire pedal-side locking section 80 or the force arm 20a

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the first actuating lever 20 is pressed downwards, thereby triggering the braking device 10.

Figures 4a to 4c show the release of the locking device 60 to release the brake pedal 16 according to the second preferred embodiment of the present invention and the subsequent brake release process. In contrast to the first preferred embodiment, the movement part 82 is attached to the fastening part 88 on the pedal-side locking section 80, which is shown in detail in an exploded view in Figure 3, in such a way that it can be pivoted about a movement part axis B. The locking lever 84 attached to the fastening part 88 can also be pivoted about a lever axis H and is preloaded by a spring 86 in such a way that it is pivoted in a vertical direction in the locked position (see Figure 4a) in order to engage or rest on the rail 70.

To release the locking device 60, as shown in Figure 4b, the moving part 82 with the big toe 14 is tilted backwards in the direction of its ball and the locking lever 84 is brought into a vertical position by means of a projection formed on the moving part 82. This is then no longer in engagement with the rail 70, whereby the entire pedal-side locking section 80 or the force arm 20a of the first actuating lever 20 is pressed downwards by pressure from the big toe 14 from above on the moving part 82, as shown in Figure 4c, and the braking device 10 is thus triggered.

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Figures 6a to 6c show the brake release process after releasing the locking device according to the third preferred embodiment of the present invention.
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In this embodiment, the movement part 82 is attached to the fastening part 88 on the pedal-side locking section 80, which is shown in detail in an exploded view in Figure 5, in such a way that it can be moved parallel to the roller skate's longitudinal axis L, as in the first preferred embodiment. Here, however, the locking part 84 is firmly connected to the front end of the movement part 82 in the form of a locking projection 84. The locking projection 84 or the movement part 82 is preloaded by a spring 86 arranged between the fastening part 88 and the movement part 82 in such a way that the locking projection 84 is in engagement or in contact with the rail 70. The brake pedal 16 or the pedal-side locking section 80 cannot therefore be pressed down in this locked position.

If, as shown in Figure 6b, the moving part 82 is moved backwards parallel to the roller skate’s longitudinal axis L by the big toe, the locking projection 84, which is firmly connected to the moving part 82, is moved accordingly and released from its position in contact with the rail 70. By pressing the big toe 14 from above onto the moving part 82, the entire pedal-side locking section 80 or the force arm 20a of the first actuating lever 20 can now be pressed downwards, as shown in Figure 6c, and the braking device 10 can thereby be triggered.

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·

In order to ensure that the locking device 60 can also be triggered if, for example, after a long journey, sweat has accumulated in the area below the big toe 14, an adhesive device 90 in the form of a well-adhering layer 90, at least one elevation 90, etc. is formed on the moving part 82 (see Figure 7).

A further development of the locking device 60 consists in providing a blocking device 96, by means of which the moving part 82 or the locking part 84 is brought into either a permanently locked position or into a permanently unlocked position. This blocking device 96 consists, for example, of a pin 96 which is inserted through a through hole on the moving part 82 or locking lever 84 and a through hole on the fastening part 88.

In addition to the possibility of releasing the locking device 60 with the toes 14, it can also be operated by a device remote from the shoe, such as a hand-held radio remote control. If a button for releasing or triggering the locking device 60 on the remote control is pressed, an electromagnet, electric motor or the like mounted below the shoe compartment moves the locking lever 84, which is preloaded by the spring 86, into an unlocked position in order to release the brake pedal 16 for braking.

Disclosed is a roller skate 1, in particular an in-line skate 1, with a braking device 10 that can be operated from the shoe compartment and is secured by a locking device

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device 60 can be blocked. The locking device 60 has a shoe-side locking section 70 and a pedal-side locking section 80, wherein the pedal-side locking section 80 can be brought into engagement with the shoe-side locking section 70 for locking and can be released again to release the braking device.

List of reference symbols

1 roller skate

2 Shoe body

3 Shoe sole

4 roller holder 6,7 rear rollers

8.9 front rollers

10 Braking device

12 roller axle

14 toes

16 Brake pedal

20,24 first, second operating lever

22,28 first, second swivel axes

26 brake bodies

34 Swivel joint

60 Locking device

70 shoe-side locking section, rail

80 pedal-side locking section

82 Movement part

84 Locking part

86 Spring

88 Fastening part

90 Detention facility

92 Spring

96 Blocking device

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Claims (23)

Expectations 1. Roller skate, in particular inline skate, with a braking device (10), wherein the brake triggering device (16) triggering the braking device (10) can be locked by a locking device (60), characterized in that that the locking device (60) can be switched on and off during travel. 2. Roller skate according to claim 1, characterized in that the locking device (60) can be actuated by at least one of the toes (14). 3. Roller skate according to claim 2, characterized in that the brake release device (16) is a pedal (16) that can be actuated by at least one of the toes (14) and that acts on an actuating device (20, 24), and that the locking device (60) has a shoe-side locking section (70) and a pedal-side locking section (80), wherein the pedal-side locking section (80) can be brought into engagement with the shoe-side locking section (70) for locking and can be released again to release the brake pedal (16). 4. Roller skate according to claim 3, characterized in that the pedal-side locking section (80) has a moving part (82) which is movable by at least one of the toes (14). 5. Roller skate according to claim 4, characterized in that the pedal-side locking section (80) has a locking part (84) which is moved relative to the movement of the moving part (82), this locking part (84) being in engagement with the shoe-side locking section (70) in the locked position. 6. Roller skate according to claim 5, characterized in that the locking part (84) is preloaded in the direction of the locked position by elastic sections (86), e.g. spring devices, rubber devices and/or the like. 7. Roller skate according to claim 5 or 6, characterized in that the moving part (82) is displaceable parallel to the roller skate longitudinal axis (L) and can be brought into or released from a locked position by displacing the locking part (84). 8. Roller skate according to claim 5 or 6, characterized in that the moving part (82) can be pivoted about a moving part axis (B) and by pivoting the locking part (84) can be brought into a locked position or released from this. 9. Roller skate according to one of claims 7 or 8, characterized in that the locking part (84) is a locking lever (84) which can be pivoted about a locking lever axis (H), one arm (84a) of which is operatively connected to the moving part (82) and the other arm (84b) of which can be brought into engagement with the shoe-side locking section (70). 10. Roller skate according to claim 7, characterized in that the locking part (84) is a locking projection (84) which is firmly connected to the moving part (82), wherein the locking projection (84) can be brought into engagement with the shoe-side locking section (70) by displacing the moving part (82). 11. Roller skate according to one of claims 5 to 10, characterized in that the pedal-side locking section (80) is connected to the actuating device (20, 24) and a fastening enhancing part (88) to which the locking lever (84) and the moving part (82) operatively connected thereto are fastened. 12. Roller skate according to one of claims 3 to 11, characterized in that the shoe-side locking section (70) consists of a solid rail (70) which is connected to the shoe (1) and is arranged such that it adjoins the pedal (16) at a predetermined distance. 13. Roller skate according to one of claims 4 to 12, characterized in that the moving part (82) has an adhesion device (90) for the toes (14), by means of which at least one of the toes (14) can be brought into operative connection. 14. Roller skate according to claim 13, characterized in that the adhesion device (90) consists of an attachment (90) which is attached to the movement device and has at least one elevation. 15. Roller skate according to claim 14, characterized in that the adhesive device (90) consists of a well-adhering layer (90) which is applied to the moving part (82). 16. Roller skate according to one of claims 4 to 15, characterized in that the locking device (50) has a blocking device (96) by which the moving part (82) is brought either into a permanently locked position or into a permanently unlocked position in order to either completely switch off the braking device (10) or to operate the braking device (10) without locking. 17. Roller skate according to claim 1, characterized in that the locking device (60) can be actuated by a device remote from the shoe. 18. Roller skate according to one of claims 3 to 16, characterized in that the actuating device (20, 24) acts on a braking body (26) movable in the direction of at least one roller (6, 7, 8, 9) in order to bring it into operative connection with at least one roller (6, 7, 8, 9). 19. Roller skate according to claim 18, characterized in that the braking body (26) first acts on one of the rear rollers (6, 7). 20. Roller skate according to claim 19, characterized in that the actuating device (20, 24) has a first actuating lever (20) on a first pivot axis (22), the force arm (20a) of which is connected to the pedal (16). 21. Roller skate according to claim 20, characterized in that the actuating device (20, 24) has a second actuating lever (24) about a second pivot axis (28), the force arm (24a) of which can be articulated by the load arm (20b) of the first actuating lever (20) in order to pivot the load arm (24b) of the second actuating lever (24) about the second pivot axis (28) in the direction of the brake body (26). 22. Roller skate according to one of claims 18 to 21, characterized in that the braking body (26) can be preloaded by elastic sections, e.g. spring devices, rubber devices and/or the like, in the direction of a rest position in which no braking function is exerted. 23. Roller skate according to one of claims 20 to 22, characterized in that an elastic device (92) is provided between the force arm (20a) of the first actuating lever (20) and the brake body, by means of which a force can be exerted or amplified on at least one of the front rollers (8, 9).